I will try to make this short. Driving down the highway the engine shut off would not restart, towed home. Replaced the control module in the Dist. Two months later engine shuts off again, towed home, while trouble shooting disconnected the tach line engine fired right up. Here's the problem pluged the line back in engine fired up. Disconnected the tach and been driving with it disconnected. Waiting for the hammer to drop again. Any ideas greatly appreciated. (355ci chevy hei dist).